diff --git a/power_fv/session.py b/power_fv/session.py
index 90e90e1..51dc466 100644
--- a/power_fv/session.py
+++ b/power_fv/session.py
@@ -1,5 +1,6 @@
 import argparse
 import os
+import readline
 import multiprocessing
 import sys